# __coding:utf-8__
class Dog():
    def __init__(self, name, age):
        self.name = name;
        self.age = age;

    def sit(self):
        """模拟小狗被命令时蹲下"""
        print(self.name.title() + " is now sitting.")

    def roll_over(self):
        """模拟小狗被命令时打滚"""
        print(self.name.title() + " rolled over!")


dog = Dog('旺财', 2);
dog.sit();
print dog.name.title();
